勤奋战胜贫穷，谨慎避免祸患，小心防止侵害，警惕免遭灾难。点评：《易经》曾言「君子终日乾乾，夕惕若。厉，无咎。」君子不仅整日自强不息、勤奋谨慎，而且到了晚上也心存警惕。如此这般，才能免除灾祸，事业得以顺利发展。

The past is a bucket of ashes.

Children have real understanding only of that which they invent themselves, and each time that we try to teach them something too quickly, we keep them from reinventing it themselves.

语法和语义之间的相互作用是形式语言研究的核心。

If a problem cannot be solved， enlarge it.

我不认为自己是个超级巨星，我只是一个热爱网球的普通人。